Ectopic kidney occurs as a result of cessation in migration of kidneys to their usual position in the lumbar region. Several cases have been reported worldwide, however only one case of ectopic kidney in infant has been reported in North Western Nigeria which was not a pelvic kidney. We present an incidental case of unilateral ectopic pelvic kidney managed in our facility. A 28-day-old male infant presented with a week history of crying while defecating and fever. He had normal abdominal findings. Abdominal ultra sound scan revealed a unilateral left ectopic pelvic kidney with no associated abnormalities. Full blood count showed elevated white blood cell count predominately neutrophils. He was managed as a case of neonatal sepsis with antibiotics. A thorough antenatal ultrasonography and early neonatal ultrasound are required for early diagnosis. Asymptomatic and noncomplicated cases are managed conservatively.